Producer-gas-fired shaft-kilns.



E. SCHMATOLLA. PRODUCER GAS [FIRED SHAFT KILNS.

APPLICATION FILED 121113.23, 1911.

1,068,175, Patented July 22, 1913.

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PRODUCER GAS FIRED SHAFT KILNS.

APPLICATION FILED PEB.23,1911.

1,068,175. Patented July 22, 1913.

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E. SOHMATOLLA. PRODUCER GAS FIRED SHAFT KILNS.

APPLIQATION FILED P3323, 1911.

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ERNST SCHMATOLLA, OF NEW YORK, N. Y.

PRODUCER- GAS-FIRED Sl-IAFT-KILNS.

1 @fi$ 1 "F5 Specification of Letters Patent. Patented July 22, 1913 Application filed February 23, 1911. Serial No. 610,383.

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To (ZZZ 10/10772- z'z may concern Be it known that l, ERNST SoHMivroLLA, a citizen of the German Empire and resident of 150 Nassau street, New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Producer-Gas-Fired Shaft- Kilns, of which the following is a specifica'tion.

This invention relates to gas fired shattkilns, and is particularly characterized by the coaction of a pair of shaft kilns with one calcining shaft of large diameter, that is formed with and extends from a pro-heati ng shaft of still larger dian'ieter.

In the accompanying jlrawings Figure 1 represents a vertical section of the invention, Fig. 2 shows a fragmentary top plan view of the kilns, 3 is a section as on the line 3, 3 of Fig. 1, ll i represents av section as on the line -;l-, 4i of Fig. l, and Fig. 5 shows a section as on the line 5, of Fig. 1.

The kilns of the invention are represented with the charging and pre-heating shaft 5 having the peep and poke holes o, formed in its wall 7J1 and casing 72 A double roof comprising the plates 0 with the charging opening (Z covers the shaft 7). A door 0 with the dampers f are located over the opening (Z. A. preliminary calcining shaft a of smaller diameter than the shaft 7) leads from the The lower portion of the wall Z: has formed therewith the arches m, m, that form roofs for the chamber Z. Gas inlet openings 0 extend through said wall 7: and lead into the chamber Z. lVater pipes 1 are located in the wall is. A V shaped division wall 9?. extends up into the chamber Z. Drawing chan'ibers 1 1- are located being the discharg ing hoppers y, and below the latter are supported grate bars a on the supporting bars la Cars 2 below the chambers 71. are used for collecting the heated material. Gas mains 10 have outlets 12 for the openings 0. Branch pipes 15 and 16 extend froin the gas mains l0 and lead to the conduits 7*.

It is to be noted that the area of the crosssection of the shaft Z) is greater than that of the shaft (4, also that the area of the cross section of the shaft 0. is greater than the combined areas of the ci.'o.-;s-sections of the two shaft kilns The kilns i are shown oblong, but may be rectangular, elliptical, 0 of other suitable cross-section.

To use the invention the charge of ma terial to be calcined or operated upon is introduced through the opening (l and the gas, preferably producer gas, from the gas mains 10 is led to the chaiiiber Z, and to the chainbers q if the conduits are formed in the walls of the apparatus. ater is at the sametime circulated through the pipes i latter, and has formed in its wall a and linto prevent the overheating of the wall Zr. .ing a the peep or poke holes o. When the products of combustion rise The shaft (1, connects with the pair of obthrough the charge the greatest heat relong shaft kilns 2' having each formed therewith at their lower ends the discharging hoppers g. In the lining of the shaft kilns are formed the peep or poke holes 41 o Upcnings w in the shaft kilns may be used either as poke holes or gas inlets, and poke holes 10 are provided in the lower portions of the said shafts The main outside walls of the invention are represented at a with the recesses a having the projections 25' for the doors to. The spaces between the lining 2' and doors it constitute heat retaining chambers s.

tained in the oblong shaft kilns where the final calcination takes place. The next greatest temperature is obtained in the shaft a for the preliminary caloination and finally the products of combustion practically give up their remaining heat to the material in the preheating shaft F). The inand products of combustion as they rise, obtains the novel result of the invention. When the material, reaches the discharging hoppers 9 it is a finished product having been gradually reduced or calcined in its -lPoke holes 7) with the covers 72 are formed descent down the apparatus. The fiat top in the walls a" with the lining p Chainface b of the wall Ii: allows some of the bcrs 9 connect the poke holes p with the shaft charge to bear thereon, and avoids the burn kilns i. Gas conduits r lead from the poke ing and injury of the top portion of said holes 7). Poke holes r extend from the redraft cesses a to the chambers Q through the kilns so as to regulate the prcs- A partition wall ll: with the openings 1 sure of the gases therein, to equally disseparates the kiln shaft e'. .ltt has the ta- J tribute the same through the charge. pered upper portion Z2 with the Hat top face 1 Having described my wall. The dampers 7' control the invention what it creased amount of material met by the gases wall, a chamber below the wall connecting with the shaft kilns, and a V shaped division wall extending up in said chamber.

1. The combination of a pair of shaft kilns, a third shaft leading to both of said shaft kilns, a fourth shaft leading to the third shaft, a roof over the fourth shaft having an opening, a door over the opening, a pair of dampers for said door, outer walls for the shaft kilns, a lining for the shaft kilns adjacent to the outer walls, a partition wall formed in said lining between the desire to secure by Letters Patent and claim 1. The combination of a pair of shaft kilns, a calcining shaft leading to the shaft kilns and of greater area of cross-section than the combined cross-sections of said shaft kilns and a pre-heating shaft leading to calcining shaft of larger cross-section than the latter.

2. The combination of a pair of shaft kilns, a calcining shaft leading to said shaft kilns, a pre-heat-ing shaft leading to the calcining shaft, a partition wall between the shaft kilns having openings for the introduction of gas, a chamber under the partition wall connecting with said openings and said shaft kilns.

3. The combination of a pair of shaft kilns, a third shaft leading to both of said Signed at Louisville, in the county of shaft kilns, and of greater area of cross-sec- 1 Jefferson and State of Kentucky this 21st tion than both of the lattfer, a fourth shaft day of February A. D. 1911. leadin to the third sha t and of greater 1 T i area of cross-section than the latter, a par- ER} ST SOHMATOLLA' tition wall between the shaft kilns having openings for the inlet of gas, water circulating pipes extending through the said chamber under the partition wall connecting with said openings, poke holes formed in the outer walls, chambers in said lining connecting with said poke holes, and gas conduits connecting with said poke holes.

Vfitnesses MARY HILL, ISABELLA GAIssnR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

shaft kilns and having openings for gas a 

